Electro- magnetism questions | form six Physics

Define the following terms.

1. Ampere
2. Hysteresis.

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UNSOLVED

Two parallel conductors A and B are situated 0.16m apart . Conductor A, caries a current of 4A and conductor B, carries a current of 8A. The directions of the currents are shown in Figure 1. Find the distance from A to a point where the magnetic fields due to A and B cancel each other (Ignore the effects of the earth`s magnetic field).

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UNSOLVED

State the law of force acting on a conductor of length/ carrying an electric current in a magnetic field.

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UNSOLVED

1. Draw the diagram of the solenoid with certain number of turns placed in the magnetic field and indicate any suitable directions of the flow of current in it.
2. Write down the formulae for the magnetic field induced at the centre of solenoid.

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UNSOLVED

It is desired to design a solenoid that produces a magnetic field of O.I.T at the centre. If the radius of solenoid is 5cm, its length is 50cm and carries a current of 10A; Calculate:

1. The number of turns per unit length of the solenoid.
2. The total length of a wire required.

Answer / Solution

UNSOLVED